Pipe connection.



|. A. IVIANN. DECD.

M. P. MANN, ExEcurRlx.

PIPE CONNECTION.

APPLICATION FILED AUG. I?. I9I5 LTSQV.

Fiji.

Pateutedep. 3, 191.5%.

INVENTOFI. @A M ATTORNEYS.

IBA A. MANN, 0F PITTSBURGH, PENNSYLVANIA; MARION P. 'MANN EXECUTBJX 0F SAID IRA. A.. MANN', DECEASED.

' PIPE CONNECTION.

Specication of Letters Patent.

Patented Sept. 3, 1918.

To all whom it may concern.'

Be it known that I, IRA A. MANN, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Pipe Connections, of which the followingis a specification.

The invention relates to pipe connections and particularly to connections for use with cast iron pipe wherein poured lead or similar metal isemployed. The principal objects of the invention are; the provision of an improved oint wherein the use of oakum or similar packing material (and subject to deterioration) for preventing the access of the melted lead to the interior of the piping is avoided; the provision of a permanent durable packing means for preventing the melted lead employed from running into the interior of the piping; the provision of a packing means which will securely hold the two pipe members from working away from each other as the structure in which the pipes are located settles, or as the pipes expand and contract under changes of temperature; the provision of a packing which will not work out of the joint under changes in temperature conditions as above specied; the provision of a packing adapted to give an -extended bearing surface at'the joint and A so support the pipes against bending out of alinement; and the provision of a packing which is cheap, which can be used with the ordinary pipe lacking a bead at its end, and which can be very easily applied. Certain embodiments of the invention are illustrated in the accompanyin drawings, wherein- Figure 1 is a vertical section through oney type of joint with the prts in the position occupied before the pac 'ng ring is wedged into position and before the application of the poured metal, Fig. 2 is a section through the same construction as Fig. 1 but with the joint completed by forcing the packing ring into its final position and applying the melted packing metal over such ring, and Figs. 3 to 7 are partial sections through modifications.

Referring to Fig. l, 1 and 2 are pipes of Fitting slidably over the end of the pipe 1 is a packing ring 6 preferably of relatively soft metal, such as lead or composition material, although hemp or other brous material might be used, such packing ring being split as indicated at l7` so as to render the one ring applicable to several dierent sizes of pi e. Embedded in the ring at intervals as indicated in Fig. 1, are a series of pins 8 preferably of hard metal such as steel, and havingtheir inner ends pointed.

In making the joint the parts are first assembled as indicated in Fig. 1, with the packing ring 6 fitting around the end of the pipe 1. The next step is the wedging of the ring ;6 down intofthe position indicated in, Fig..- 2, such operation being accomplished by means of a suitable tamping tool. During this operation the angularity of the pinsstopped by the annular stop member 5 while y their outer ends are free to move down- A ward until they come oppo'site the overhang 9 at the upper edge of the enlargement 10. The body portion of the ring 6 lits down into the recess 10 being forced tightly into position by means of 'the tamping tool, after which soft metal, preferably in .molten form, isapplied to form the secondary packing 11.

The packing rin 6 not only serves to prevent the remova of the pipe 1 but also serves as a stopper preventing any of the molten metal 11 from flowing down into the interior of the pipes. The arrangement also .gives an extended bearing between the two pipes tending to prevent their bending out .of alinement and thus forming a bent or rough place upon the interior of the piping. The points of the steel pins 8 indent the surface of the pipe 1 while the outer ends of the pins take against the overhang 9 so that it is impossible for the two pipes to move away fromeach other. The pins are held against movement from their final position not only by the overhang 9 but also by the packing 11, the surface 12 of the hub being preferably made on an incline, as illustrated, in order to prevent the packing from working outward. The packing is also prevented from working outward by reason of the fact that the pipes themselves cannot move in and out, such in and out movement of connected pipes being the main cause of' soft metal packing working out of joints of this general Character. The peeking 6 is not subject to cleteiioiation es is the @eee with the oekum which iS now commonly employed at the inner portion of pipe joints e in order to iioiin e Seel intl pieifent the inolten leed :troni iiowing to the inieioi of tlie pipes. @ther advantages of the oon-- struction will be ieaclily apparent to those Skilled in tile mit. l@ Fig. 3 illustrates e inodieetion in which e metal peeking Ting 13 of lieitl materiel. such :is iron7 is employed at the joint of the pipe ineniloeie .1f-i enel 15. This ring is preferably split.a as in the other type of' Constructiong end iS ei'ii'en tightly into position before tlie molten packing metal 1t is applied. rille linlo ineniloei is piovidecl with en oif'eilieng 1?" to plei'ent the peeking materiel ifioin working ontw-(iid. The Ting 13 not only 2i? serves :Le :i Seel to prevent 'the melt-eel leaol .iE-ioni Tunning' into the pping but nieo locke the pipes 1-1 enel 15 against movement away fiom eeeli other. The ring also seives to pievent tlie pipes from bending out oi eline 25 nient..

Fig. i illuetietes e modification in which n cliitieient` forni of overhang 18 is employ/ed7 the pipe inenibeis 19 and 2O being subsite tielly the Sinne ne in the Construction of i*- 313 and. the. paeiting Ting ,A and Soit peeking; eleo being ennieii essifle from slight :lmnp/jes in eongliifit-ion.

in the eonetiuetion o Tief. 5 o unil eine f' Sii Tine' :i mfeilin ation iii `ein weibl i Al! ineens oi 'ce1/ent the jigs BO and e, iecese 35 l emi gironi n" info into winch the pipe iite with its Well Spzieefl away tioni the Weli the pipe, e peeking ying in the space between the Seid Welle, and herd metal pins embedded in the fing and inclined with respect to the eine 70 of the pipe.

3. in eoniliinziiion in zi pipe `joint7 :i pipe, e hub into which the pipe lite with its Well spaced iw-ej, ifioni the Weil of the pipe, e peeking composed of soit inetel in the space between 'tlie said Weils, and herd inetel pine embedded in the fing; enel inclined with i'espeoi to the exis oit the pipea the inner ende of the pins being pointed. Y

Je. in Combination in i pipe jointj e pipe., 80 e linb into which the pipe is Witli its Wall spaced away iioin the mili oi2 the pipe@ peeking fing composed of soft inetei in the Space between the said Welie, enel liaiei metal pine embedded in the ring enel. inclined with 35 respect to the exis of tlie pipe, tlie inne: poi"- tion of the seid space having en enleiged `fiiziineiei to ieeeive the fing enel pins when ioioefi down into Weclging positeion.

5. 1n combination in a pipe joint, e pipe, 9U zi linie into ich the pipe me with Weli spaced away ii'oin the Wzili oit the Gifting; ring composed; oit so.. nieie.,

nece between e seid Welle2 e pies einloedf in the eine being poini, iovioleei the surface of the pipe when the ring` is forced to its innermost position.

9. In combination in a pipe joint, a pipe, a hub into which the pipe fits with its wall spaced away from the'wall of the pipe, a packing ring'composed of soft metal in the space between the said walls, and hard metal pins embedded in the ring and inclined with respect to the axis of the pipe, the inner ends of the pins being pointed, and the inner wall of the hub being inclined to engage the outer ends of the pins and prevent their outward movement when the ring is forced down into wedging position.

10. As an article of manufacture, a soft metal packing ring and hard metal pins embedded therein inclined toward the axis of the rings.

11. As an article of manufacture, a soft metal acking ring and hard metal pins embedded) therein inclined toward the axis of the ring, and having their inner 'ends pointed.

1'2. As an article of manufacture, a packing ring of relatively soft material,` and hard metal pins embedded therein inclined toward the axis of the ring and having their inner ends pointed.

IRA A. MANN. 

